co/co2 level indicator seminar
Post on 13-Jul-2015
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The Team,
S V Ravi Tej,
06881A0438
C Sri Harsha,
06881A0449
P Sai Raghav,
06881A0441
Inde
x:
Introduction
Abstract
Block diagram
Components
Flow Chart
Operation
Applications
Advantages
Disadvantages
Conclusion
References
Inde
x:
Introduction
Abstract
Block diagram
Components
Flow Chart
Operation
Applications
Advantages
Disadvantages
Conclusion
References
The main objective which led to the motivation of the project isthe ‘POLLUTION’.
( Abstract )
The pollution level in an area should be indicated which
became the primary goal of the project.
Pollution Sensor :
* A smoke sensor is used to detect the level of the smoke out
of carbon dioxide which is then indicated using bar level
displays.
Conversion mechanism :
* Comparator IC’s
Pollution Level Indicator.
This would finally indicate the level of pollutants (CO/CO2) in
a chosen area.
Inde
x:
Introduction
Abstract
Block diagram
Components
Flow Chart
Operation
Applications
Advantages
Disadvantages
Conclusion
References
Inde
x:
Introduction
Abstract
Block diagram
Components
Flow Chart
Operation
Applications
Advantages
Disadvantages
Conclusion
References
Dc power supply
Components In block I
INTERRUPTER SWITCH(MOC70P3)
Components In Block II
•LM3914•LED Bar Display
MOC70P3
The MOC70P3 consists of an infrared light emitting diode coupled
to an NPN silicon phototransistor.
MOC70P3
FEATURES
No contact sensing
5 mm gap
.040” aperture
Low profile
PCB mount
Transistor output
LM3914
Drives LEDs, LCDs or vacuum fluorescents
Bar or dot display mode externally selectable by user
Expandable to displays of 100 steps
Internal voltage reference from 1.2V to 12V
Operates with single supply of less than 3V
Output current programmable from 2 mA to 30 mA
No multiplex switching or interaction between outputs
Input withstands ±35V without damage or false outputs
Outputs can interface with TTL or CMOS logic
LED BAR Display
Inde
x:
Introduction
Abstract
Block diagram
Components
Flow Chart
Operation
Applications
Advantages
Disadvantages
Conclusion
References
Start
Co/ co2 gas when passed through sensor it generates a
voltage
The generated voltage is power amplified using a Darlington
Pair
The amplified signal from the Darlington is given to the
LM3914 in the block II
Then the LM3914 outputs a compared voltage which is used to glow the LED bar Displays.
Stop
Block I
Block II
Inde
x:
Introduction
Abstract
Block diagram
Components
Flow Chart
Operation
Applications
Advantages
Disadvantages
Conclusion
References
Operation of BLOCK I :
The H21A1 detects the pollutant level.
The signal is amplified using the power amplifier (Darlington
Pair)
The signal is transmitted to the block 2
Operation of BLOCK II :
The signal from the block is compared using the comparator
IC`s.
The compared output is displayed on the LED bar displays.
Inde
x:
Introduction
Abstract
Block diagram
Components
Flow Chart
Operation
Applications
Advantages
Disadvantages
Conclusion
References
Carbon Dioxide CO2 Sensor
Excellent performance CO2 Sensor, for use in a wide range of
applications, including air quality monitoring, smoke
alarms, mine and tunnel warning systems, greenhouses, etc.
The sensor is easy to use and can be easily incorporated in a
small portable unit.
Features
• High Sensitivity
• Detection Range: 0 - 10,000 ppm CO2
• Response Time: <60s
• Heater Voltage: 6.0V
• Dimensions: 16mm Diameter, 15mm High excluding
pins, Pins - 6mm High
Alcohol Sensor
Alcohol Sensor for use in Breathalyser's or in an alarm unit, to
detect the presence of alcohol vapours. This sensor unit offers
very high sensitivity, combined with a fast response time. The
unit will work with a simple drive circuit and offers excellent
stability with long life.
Features
• High Sensitivity
• Detection Range: 10 - 1,000 ppm Alcohol
• Fast Response Time: <10s
• Heater Voltage: 5.0V
• Dimensions: 16mm Diameter, 10mm High excluding
pins, Pins - 6mm High
High-Accuracy Alcohol Sensor
Hot-wire High Accuracy Alcohol Sensor, for use with
breathalyser units. Low power consumption, makes this
sensor ideal for battery powered units. Wide operating
temperature range with little or no adjustment required for
temperature and humidity
Features
• High Sensitivity
• Detection Range: 0 - 1,000 ppm Alcohol
• Fast Response Time: <20s
• Working Voltage: 3.0V
• Working Current: ~120mA
• Dimensions: 16mm Diameter, 10mm High excluding
pins, Pins - 6mm High
LPG Sensor
Ideal sensor for use to detect the presence of a dangerous
LPG leak in your car or in a service station, storage tank
environment. This unit can be easily incorporated into an
alarm unit, to sound an alarm or give a visual indication of the
LPG concentration. The sensor has excellent sensitivity
combined with a quick repsonse time. The sensor can also
sense iso-butane, propane, LNG and cigarette smoke.
Features
• High Sensitivity
• Detection Range: 100 - 10,000 ppm iso-butane propane
• Fast Response Time: <10s
• Heater Voltage: 5.0V
• Dimensions: 18mm Diameter, 17mm High excluding pins,
Pins - 6mm High
Carbon Monoxide (CO) Sensor
Carbon Monoxide sensor for use in industrial or mining
applications. This unit offers excellent long life performance
with stable sensing characteristics.
Features
• High Sensitivity
• Detection Range: 10 - 1,000 ppm CO
• Response Time: <150s
• Heater Voltage: 5.0V
• Dimensions: 16mm Diameter, 10mm High excluding pins,
Pins - 6mm High
Natural Gas Sensor
Detect dangerous gas leaks in the kitchen or near the gas
heater. This unit detects 300 to 5000ppm of Natural Gas. Ideal
to detect dangerous gas leaks in the kitchen. Sensor can be
easily configured as an alarm unit. The sensor can also sense
LPG and Coal Gas.
Features
• High Sensitivity
• Detection Range: 300 - 50,000 ppm Natural Gas
• Fast Response Time: <10s
• Heater Voltage: 5.0V
• Dimensions: 18mm Diameter, 17mm High excluding pins,
Pins - 6mm High
Inde
x:
Introduction
Abstract
Block diagram
Components
Flow Chart
Operation
Applications
Advantages and
Disadvantages
Conclusion
References
Advantages
Circuit is Simpler
Circuit is Flexible
Surrounding effects are less
disadvantages
For Real time application the cost may be a bit more.
Inde
x:
Introduction
Abstract
Block diagram
Components
Flow Chart
Operation
Applications
Advantages
Disadvantages
Conclusion
References
1.Comlete circuit consists of 2 Mechanisms
Pollution Sensing Mechanism.
Pollution Indicating Mechanism.
2.Pollution Sensor – Senses Pollutants.
Pollution Indicator - Indicates Pollutant Level.
3.Just by replacing the sensor a new pollutant indicator
is created.
Inde
x:
Introduction
Abstract
Block diagram
Components
Flow Chart
Operation
Applications
Advantages
Disadvantages
Conclusion
References
www.google.com
www.circuits-projects.com
www.crazyengineers.com
www.toprojects.blogpsot.com
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